Phonograph determining device.



T. A.ABDIS0N. PHONOGBAPH DBTBRMINING DEVICE.

APPLICATION FILED JUNE 2, 1910,.

1,046,414. Patented Ina-@3,1912

n if; ran sanfrnnr orrrcn THOMAS A. EDISON, OF LLEWELLYN PARK, WESTORANGE, NEW JERSEY, .ASSIGNOR, BY MESNE ASSIGNMENTS, T0 THOMAS A.EDISON, INCORPORATED, 0F WEST ORANGE, NEW JERSEY, A CORPORATION OF NEWJERSEY. l d

PHONOGRAPH DETERMINING DEVICE.

Specification of Letters Patent.

v Patented Dec. 3, 1912.'

@riginal application led November 13, 1903, Serial No. 180,998.' Dividedand this application tiled .Tune 2,

1910. Serial No. 564,581.

To fait whom it may concern:

`Be it known that I, THOMAS A. EmsoN, al citizen of the United States,and a resident of Llewellyn Park, West Orange, Essex county, New Jersey,have invented romain new and useful Improvements in Phono a hDetermining Devices, of which the fol owing is a description.

. 4My inventlonrelates to determining devices for phonographs or talkingmachines, this application being a division of my application Serial No.180,998, filed November .13. 1903 for apparatus for recording sounds.

" tion and the record surface is'revolving.

The supporting device is preferably a ball of sapphire or other jewel.It is to be understood that the weight of the recorder is borne by thisball which rides upon the surface of the rota-ting' record blank, the

depth to which the recording stylus may enter the surface of the blankdepending upon the maximum distance the stylus may project below thesupporting ball. It is lmportant in recording that the position of thesupporting ball or ldetermining device may, be adjusted while themachine is runi. ning, since the depth of cut of the recording stylusmay require adjustment during operation to conform to the varyingconditions which may be met.

In order that my invention may be better understood, attention isdirected to the accompanying drawings forming part of thisspecification, in which- Figure l is a bottom plan view of a. recordershowing the preferred form of my improved determinin device. Fig. 2 isasectional view thereo taken on line 2-2 of Fig. 1. Fig. 3 isa sectionalview taken on line 3--3 of Fig. 2; and Fig. 4 is a front view* of thebody of the recorder.

In 'all of the above views, corresponding parts are represented by thesame reference characters.

The hollow tube 1 which is connected to lor is a continuation of theusual horn or funnel is carried by the usual support, not shown, and hasears 2, 2, between which 1s pivoted the head or barrel 3. latter issecured the sound box or body 4 to the lower face of which is connectedthe dlaphragm 5. Across the lower face of the body and below thediaphragm is the tracking lever 6 which serves as a support for the ball7, which latter rests upon a record surface shown in Fig. 2 as a sectionof a cylinder and supports the body, allowing it to oscillate about the'pivot between the ears 2, 2and accommodate itself to all largeirregularities in the surface of the blank. Theball 7 is of acomparatively small curvature, but is suiicient to permit universaladjustment and is preferably made of a jewel of which sap hire seems tobe the best material, as it oes not have any appreciable eiect upon therecord blank; furthermore, it is susceptible to taking a high polish sothat its passage over the record will not scratch or .otherwisel injurethe same. v

The lever 6 is connected to one end of the body 4 by means of a screw 8which passes through a slot 9 formed within an elastic extension 10 ofthe lever, whereby an elastic connection is formed so that the lever,-together with the ball 7, may be adjusted in To the l relation to thecenter. of the diaphragm in tive osition of the ball 7 and the body mayv b e a justed when the-machine is running.

The knife or recording stylus 13 is attached to the diaphragm adjacentto its center and onthe same line of travel as the ball 7 by means of asupport or foot 14. The foot 14 is secured to the diaphragm by asuitable cement, such as melted shella'c. The foot 14 may be connectedto one end of an elastic reed 15, the other end of which 'is secured toa pillar 16 formed upon a continuation of the body 4. It will beunderstood that my invention'is not limited to the exact constructionshown, but that it comprises all eqtpivalent constructions and 1s onlylimited y the appended claims.

' Having-now described my invention, what claim and desire to protect by-Letters Pat- .ent is as follows:

l. Inay recording device for recording 'soundlwavea the combination witha body,

fof'a' diaphragm carried thereby, a lever having an elastic extension atone'end, means securingv said elastic extension to said body,

a support carried-by said lever adapted to engage the record, and meansfor adjusting lthe other end of said lever'relative to said body,'substantia ly as described.

2..Ina reco ding device "for recording sbund waves, the combination witha body,

of a diaphragm carried thereby, support-ing means having'an elasticconnection with said body and adapted to engage th'e record, and

hieans for adjusting the said supporting .means relative to lsaid body,substantially as described.

' 3. In a recording device for recording ysound waves, the combinationwith a body,

of a Ydi phragm carried thereby, supporting means having an elasticconnection withv said body 'and provided with a ball adapted to engagethe rec d,'and means for aldjusting the said suppo ting means relativeto said` bod-y, substantially as described.

4. In .a recording device for recording sound waves, the combinationwith a body, .of -a diaphragm carried thereby, a lever hav- 4ing' at oneend an elastic connection with said body, la supportlcarried by saidAlever y and adapted to engage the record, and. a

screw'mounted' in athreaded opening in said' body, the extremityof saidscrew engaging the other en d of said lever'for adjusting the positionof the latter relative to said body,

' substantially as described.

N 5.2In a recordingl device for, recording sound Waves, ,thelcombination with a body,

ofl a diaphragm carriedthereby, a lever hav-v i'ng at one end anadjustable connection with said body, said connection permittinglongitudinal adjustment of said lever, a supi port carried-by saidleverI and adapted to engage the record, and means for adjusting theother end of said lever relative to said body, substantially asdescribed.

6. In av recording 'device for recording sound waves, the'combinationwith, a body,

of a diaphragmcarried thereby, a lever having at one end an adjustableelastic connection'with said body, a .support carried by said lever andadapted to engage the record,

and means for adjusting the other end of.

said' lever relative to said body, substantially as described.

'1 In arecording device for recording sound waves, the combination witha body,

of a ,diaphragm carried thereby, a! lever hav' ing an elastic slottedportion at one end, a

screw passing 'through theslot in said lever for securing the latter tosaid body, a support carried by s'aid lever and adapted to enf g'age therecord, and means for adj ust-ing the other end of said lever relativeto said body.

8. In a device for recording sound waves,

1 the combination with abody, of a dia-

